Tension device for wire-tying machines



June 30, 1925.

1,544,097 J. s. MCCHESNEY TENSION DEVICE FOR WIRE TYING MACHINES Filed Oct. 28, 1924 Patented June 30, 1925.

UNITED STATES EATENT OFFICE.

JOHN SHERMAN MOCHESNEY, OF CHICAGO, ILLINOIS, ASSIGNOR-TO CARY MANU- FACTURING (70., 0F BROOKLYN, NEW YORK, A CORZPORATION OF NEW YORK.

TENSION DEVICE FOR WIRE-TYING MACHINES.

Application filed October 28, 1924. Serial No. 746,282.

To all whom it may concern.

Be it known that I, JOHN SHERMAN Mo- CHESNEY, a citizen of the United States, residing at Chicago, county of Cook, State of Illinois, have invented a certain new and useful Tension Device for \Vire-Tying Machines, of which the following is a specification. y

This invention is a tension means for use in connection with a wire tying machine,

and it pertains, more particularly, to arotatable head of novel formation by which a wire tie may be fixedly connected therewith in a manner to place tension on said wire tie by a rotative movement of the head.

The object of the invention is the production of a rotatable head all. the parts of which are unitary in construction and which is adapted for use'in connection with plain round wires or with deformed round wires, as may be desired.

To these ends, my invention is a tension head comprising a body member free from moving or separate parts and constructed for receiving and holding an end of a plain round wire or a deformed end shouldered wire tie.

In a preferred form, the head is provided on one face with a plurality of concentric rims,-one of which is notched to receive and hold a deformed tie which is bent around the circumference of the head so that a rotative movement of the head places tension on the wire tie. Furthermore, the head is provided with a series of pockets extending tangentially to the circumference of the head and opening into a circumferential groove, whereby a plain round tie ma be held by thrusting the same into one o the pockets and by bending the tie within the circumferential groove so that tension may be placed on the tie by a rotative movement of the head; i

Other functions and advanta es of the invention will appear from the ollowing description taken in connection with the drawin gs," wherein- Figure 1 is a perspective view of a wire tying machine equipped with a tension head of the present invention.

Figure 2 is a face view of the tension head, partly in section, and showing the manner of using a deformed tie therein.

Figure 3 is a plan view of the head.

Figure 4 is a sectional view taken cenportion of a trally through the grooved part of the crosswise of the axis thereof.

In Figure 1 there is shown a tying machine which forms the sub'ect-matter of a copending application filed y me on Oct; 3,

head

1924:, Serial N 0. 741,514, wherein the frame A is provided with a slot or throat a-for receiving the substantially parallel portions of a tie wire B which is looped around the package. This frame supports a horizontal shaft on which is loosely mounted a tension lever C and a twisting lever D, and said shaft is provided at its respective ends with tension heads E F, to which the end portions of the wire tie B are adapted to be connected for the purpose of placing tension on said tie by the rotative movement of the heads E F when the lever C is pulled by hand in a forward direction. The frame is equipped, also, with a twister pinion tov which motion is given by a gear segment G which is unitary with the lever D, so that the wire tie, when tension is placed thereon, may be twisted to form a splice or knot, after which the surplus wire is cut from the loop by a double cutter embodying the members H H, all as will more fully appear by reference to said application.

The invention of the present application is a novel form of the tension head E shown in detail in Figures 2, 3 and 4 of the drawings. Said head is constructed for use, more particularly, in connection with a deformed tie wire B constituting the subjectmatter of Cary Patent No. 1,419,110, June 6, 1922, and shown in Figure 2 of the drawings in connection with the head E, butit is to be noted that said head E is constructed, also, for use in connection with a non-deformed tie wire composed of a piece of plain round wire shown at B in Flgure 4 of the drawings.

The head E consists of'a solid body member e, one face of which is of ratchet formation as at f to adapt said head for use in connection with a feed pawl on the tension lever and a check pawl of the frame A. This body member is provided with an axial opening 9 for the reception of the shaft.

The novelty in the head resides, partly, in the employment of annular rims h 2' protruding from that face of the head on the opposite side from the ratchet f. These rims are of difi'erent diameters, and they are concentric with each other and with the axis of the head. The inner rim i is provided with a series of radial notches 41', whereas the outer rim h is formed with a series of radial notches 71,, the latter being in register or in alinement radially with the notches i of the inner rim, see Figure 2.

The body member a of the tension head is provided with a circumferential groove 9' in a plane at one side of the notched face rims h, i, and in this body member is formed a series of pockets is, the latter extending tangentially to the circumference of the head and the outer ends of said pockets having enlarged or flared -mouths k which open into the circumferential groove j.

The head E is made fast with the machine shaft at one end thereof, and the rimmed face 71., z, ofsaid head is exposed for convenient access, to the end that an operator may introduce a deformed end portion b of a wire tie into operative position with respect to the rims h, i, of said head. With the head in any position convenient to the operator, a deformed end 5 of the tie B is adapted to be placed by a sidewise or lateral movement into registry notches i h of the two rims h, 2', with the deformation 1) in the notch 71 of the inner. rim, 2', and by a rotative movement of the head E, the tie wire is partly wrapped around the circumference of the head, and preferably within the annular groove j thereof, such rotation of the head positioning the tie wire so that it may be brought down in a manner to be bent around a direction roll H and thence passed into the throat a of the machine The deformed end of the tie wire is thus anchored on, or locked to, the tension head E, and when this head, the shaft, and the head F are rotated by the movement of the tension lever C, the two heads E F pull on the tie wire in opposite directions for placing tension uniformly and quickly thereon.

The tie wire is attachable easily to the tension head by a simple operation of placing the deformed end 1) into the notched rims, and the mere act of inserting the tie wire locks the deformed wire to the head. The wire is held from slipping in the head by the shoulders produced on the deformed portion of the wire. All the parts are unitary with the head, there being no separate or movable parts, and the head is adapted to be produced economically.

A plain round wire B is adapted for use also in the tension head E in the manner shown in Figure 4. One end of such plain wire is thrust into one of the pockets la, the flared end 70 of which guides said wire into the pocket in the act of inserting it, and the wire is bent around the head by a rotative movement thereof, said wire being partly wrapped on the head and within the groove j thereof.

The wire tie composed either of lain wire or deformed wire, is locked secure y to the head by the eculiar formation thereof herein shown and described.

Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent is:

1. A tension head has thereof with a plurality of rims havng means for receiving and retaining a deformed wire tie.

2. A tension head for wire tying machines embodying a body member provided on one face thereof with a plurality of rims and with notches in said rims for receiving and retaining a deformed wire tic.

3. A tension head for wire tying machines embodying a rotatable member provided with a circumferential groove, and a plurality of concentric rims having means for receiving and retaining a deformed wire tie.

4. A tension head for wire tying machines embodying a rotatable member provided with a plurality of concentric rims which protrude from a face of said member, said rims having coincident notches into which is insertible a deformed wire tie.

5. A tension head for wire tying machines embodying a rotatable body member provided with unitary means for receiving and retaining a deformed wire tie and with means unitary therewith for receiving and retaining a non-deformed plain wire tie.

6. A tension head for wire tying machines embodying a rotatable member provided with notched rims for a deformed wire tie and having a plurality of tangential pockets for receiving and retaining a plain wire tie.

7. A tension head for wire tying machines embodying a rotatable member provided with a circumferential groove, a plurality of protruding notched rims, and a plurality of tangential pockets which open into said groove.

In testimony whereof I have hereto signed my name this 23rd day .of October, 1924.

JOHN SHERMAN MGCHESNEY.

, for wire tying machines embodying a body member provided on one 

